REAL-TIME POSITION AND ATTITUDE SENSING USING CCD CAMERAS IN MAGNETICSUSPENSION SYSTEM APPLICATIONS

A position measurement system using CCD cameras is designed for large- gap magnetic suspension applications. White dots are placed on a magne tically suspended model, which is then scanned by CCD cameras against a black background. A real-time hardware system is applied to detect t he coordinates of these white dots and generate corresponding attitude data for the suspended model by the lookup-table method. Circuit hard ware is designed and implemented with efficient algorithms to accompli sh the objective. The purpose of the real-time measurement system is t o detect the position and attitude of the magnetically suspended model and to feed this information to the control circuit. System analysis and test results are presented.